William g



@mit faire @met @fina WlLLlAM G. SCHMI'DLIN AND JEREMAH W. DRISCOLL, OF` NEW YORK, N; Y.

Letters Patent No.4 77,408, dated Aprilv 2S, 1868.

IMPROVEMENT IN REPLEGTORS.

TO ALL WHOM ITMAY CONCERN: 'i 1 Be it known that we,'W1LLIAM G. SCHMIDLIN and JEREMIAH W. Dn'IscoLL, of the city and State of New York, have invented and inode a c ertain -new and useful Improvement in Rell'ectors; and we do hereby declare the following to be a'full', clear, and exact description of the said invention, reference being had to theannexeil drawing, making part of this specification, wherein- Figure 1 is a vcrticalsection of the said reflector, and Figure 2 is an inverted plan of the same. Similar letters denote like parts. Difficulty has heretofore been experienced over a considerable extent of surface, such as a 'reflectors increased the illumination ofthe object, the reflector. i

Mirrors have been made with concave re conical reilectors over gas-lights.

The nature of our said invention consists in a poly dome metallic retlectors are introduced to throw the. rays of l desired distance, and in as many different directions as there are concave reflectors, Such .rays of'light crossing eachother, and at the same time being sutliciently concentrated that the more distant parts of a. billiard-table, n. counter, atable, or a sho\v\rindow,shall he illuminated almost the same as the parts beneath vsuch reflector. In the drawing, a a are the sections ot metal, set' together to form the polygonal conical reflector, and b b are the concave dome reflectors, introduced in these sections a a.

VThe sheet metal employed may be either smooth'or corrugated, may be in a general lnt shape, as seen in iig. 1

lines in fig. 1.

The Areflecting-surface itself is to be silvercd or formed ot other Bright reflecting-material.

The sections a are provided with flanged edges, receiving the glass plat-es c cto protect the reflecting surface from the action of the atmosphere. These glasses should be set in as nearly air-tight as convenient, in order that the reector may be durable; and the glass employed may be corrugated.. but we prefer that the same be plain sheet glass.

The pipe/for the gas is4 provi formed with the central opening` as usua in producing reflectors that would throw a nearly uniform light billiard-table, a store-counter, or show-window. The said but the distant parts were notA near as light as those below tlectors in their surfaces,'but these are not/.adapted to use in ight from central burner or burners oil` th-e We prefer the'lattor, and the sections a fled at d,and c is the burner or burners. Over the burner, the reflector is t l, and a smoke-'cap may be suspended over the said opening, as seen 'at e. The dotted lines, iig. 1, illustrate the direction'in which the rays of light are thrown, and it will be evident that the concave dome, introduced in the sections forming the polygonal reflectors, tend to throw the light oil' to a distance, and illuminate the article more uniformly.

This reflector may be employed with a. lamp instead of algas-burner. What we claim, and desire to secure by Letters Patent, `is The concave dome reflectorsrintroduced in the sections or si for the purposes set forth.

In witness whereof, we have hereunto set our signatures,

des of the conical polygonal reector, as and this` thirteenth dayof February, 1868.

WMA. G. SCHMIDLIN, 'J'. W. DRISCOLL.

Witnesses:

Cues. H. SMITH, g Gno. T. PnzcKNrY.l

gonal conical reflector, in the sides of which concave but we prefer that the same should be cur\'ed,as seen by redl 

